Electronic musical instrument having plural oscillators starting

Details Electronic musical instrument having plural oscillators starting Electronic musical instrument having plural oscillators starting

1976-07-26

1978-10-24

Schaefer, Robert K.

Music

Instruments

G10H 104

Patent

active

041214897

ABSTRACT:
An electronic musical instrument comprises a plurality of tone generators for independently producing tone signals having slightly different frequencies, though fundamentally corresponding to the note of a key depressed on a keyboard; and a mixing circuit coupled to the outputs of the tone generators. The respective tone generators are provided with a control input and are brought to start in the same phase in response to application of an initial synchronizing pulse to the control inputs, thereby attaining clear rise of musical sounds immediately upon key depression. The synchronizing pulse may be produced necessarily at the instant of key depression only when an output of the mixing circuit has a amplitude level lower than a predetermined level.

REFERENCES:
patent: 3215767 (1965-11-01), Martin
patent: 3510565 (1970-05-01), Morez
patent: 3790693 (1974-02-01), Adachi
patent: 3809792 (1974-05-01), Deutsch
patent: 3824326 (1974-07-01), Obatashi
patent: 3828109 (1974-08-01), Morez
patent: 3902396 (1975-09-01), Hiyoshi

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